Stegano/docs/tutorial.rst
2016-05-18 08:44:47 +02:00

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Installation
============
.. code-block:: bash
$ sudo pip install Stegano
You will be able to use Stéganô in your Python programs
or as a command line tool.
If you want to retrieve the source code (with the unit tests):
.. code-block:: bash
$ git clone https://github.com/cedricbonhomme/Stegano.git
.. image:: https://api.travis-ci.org/cedricbonhomme/Stegano.svg?branch=master
:target: https://travis-ci.org/cedricbonhomme/Stegano
Using Stéganô as a Python module
================================
LSB method
----------
.. code-block:: python
Python 3.5.1 (default, Dec 7 2015, 11:33:57)
[GCC 4.9.2] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from stegano import slsb
>>> secret = slsb.hide("./examples/pictures/Lenna.png", "Hello world!")
>>> secret.save("./Lenna-secret.png")
>>> print(slsb.reveal("./Lenna-secret.png"))
Hello world!
Description field of the image
------------------------------
For JPEG and TIFF images.
.. code-block:: python
Python 3.5.1 (default, Dec 7 2015, 11:33:57)
[GCC 4.9.2] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from stegano import exifHeader
>>> secret = exifHeader.hide("./examples/pictures/20160505T130442.jpg",
"./image.jpg", secret_message="Hello world!")
>>> print(exifHeader.reveal("./image.jpg"))
More examples are available in the
`tests <https://github.com/cedricbonhomme/Stegano/tree/master/tests>`_.
Using Stéganô in command line for your scripts
==============================================
Display help
------------
.. code-block:: bash
$ slsb --help
Usage: slsb [options]
Options:
--version show program's version number and exit
-h, --help show this help message and exit
--hide Hides a message in an image.
--reveal Reveals the message hided in an image.
-i INPUT_IMAGE_FILE, --input=INPUT_IMAGE_FILE
Input image file.
-o OUTPUT_IMAGE_FILE, --output=OUTPUT_IMAGE_FILE
Output image containing the secret.
-m SECRET_MESSAGE, --secret-message=SECRET_MESSAGE
Your secret message to hide (non binary).
-f SECRET_FILE, --secret-file=SECRET_FILE
Your secret to hide (Text or any binary file).
-b SECRET_BINARY, --binary=SECRET_BINARY
Output for the binary secret (Text or any binary
file).
Hide and reveal a text message
------------------------------
.. code-block:: bash
$ slsb --hide -i ./pictures/Lenna.png -o ./pictures/Lenna_enc.png -m HelloWorld!
$ slsb --reveal -i ./pictures/Lenna_enc.png
HelloWorld!
Hide and reveal a binary file
-----------------------------
.. code-block:: bash
$ wget http://www.gnu.org/music/free-software-song.ogg
$ slsb --hide -i ./pictures/Montenach.png -o ./pictures/Montenach_enc.png -f ./free-software-song.ogg
$ rm free-software-song.ogg
$ slsb --reveal -i ./pictures/Montenach_enc.png -b ./song.ogg
Hide and reveal a message by using the description field of the image
---------------------------------------------------------------------
.. code-block:: bash
$ ./exif-header.py --hide -i ./Elisha-Cuthbert.jpg -o ./Elisha-Cuthbert_enc.jpg -f ./fileToHide.txt
$ ./exif-header.py --reveal -i ./Elisha-Cuthbert_enc.jpg
Steganalysis
------------
.. code-block:: bash
$ steganalysis-parity -i ./pictures./Lenna_enc.png -o ./pictures/Lenna_enc_st.png